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https://www.readbyqxmd.com/read/29761607/epidemiology-and-phylogenetic-analysis-of-hepatitis-d-virus-infection-in-australia
#1
Kathy Jackson, Jennifer MacLachlan, Benjamin Cowie, Stephen Locarnini, D Scott Bowden, Nasra Higgins, Theo Karapanagiotidis, Suellen Nicholson, Margaret Littlejohn
BACKGROUND: The incidence and trends in hepatitis D virus (HDV) in Australia have not been recently assessed and the circulating genotypes have never been determined. AIM: This study aimed to characterise the current virology and epidemiology of HDV. METHODS: Notifiable disease surveillance and laboratory testing data were analysed to assess demographics, risk factors, and trends. HDV serology and RNA testing were performed on requested samples from 2010-2016...
May 14, 2018: Internal Medicine Journal
https://www.readbyqxmd.com/read/29736037/broadly-neutralizing-antibodies-from-human-survivors-target-a-conserved-site-in-the-ebola-virus-glycoprotein-hr2-mper-region
#2
Andrew I Flyak, Natalia Kuzmina, Charles D Murin, Christopher Bryan, Edgar Davidson, Pavlo Gilchuk, Christopher P Gulka, Philipp A Ilinykh, Xiaoli Shen, Kai Huang, Palaniappan Ramanathan, Hannah Turner, Marnie L Fusco, Rebecca Lampley, Nurgun Kose, Hannah King, Gopal Sapparapu, Benjamin J Doranz, Thomas G Ksiazek, David W Wright, Erica Ollmann Saphire, Andrew B Ward, Alexander Bukreyev, James E Crowe
Ebola virus (EBOV) in humans causes a severe illness with high mortality rates. Several strategies have been developed in the past to treat EBOV infection, including the antibody cocktail ZMapp, which has been shown to be effective in nonhuman primate models of infection 1 and has been used under compassionate-treatment protocols in humans 2 . ZMapp is a mixture of three chimerized murine monoclonal antibodies (mAbs)3-6 that target EBOV-specific epitopes on the surface glycoprotein7,8 . However, ZMapp mAbs do not neutralize other species from the genus Ebolavirus, such as Bundibugyo virus (BDBV), Reston virus (RESTV) or Sudan virus (SUDV)...
May 7, 2018: Nature Microbiology
https://www.readbyqxmd.com/read/29685158/ebolavirus-diagnosis-made-simple-comparable-and-faster-than-molecular-detection-methods-preparing-for-the-future
#3
Ameh S James, Shawn Todd, Nina M Pollak, Glenn A Marsh, Joanne Macdonald
BACKGROUND: The 2014/2015 Ebolavirus outbreak resulted in more than 28,000 cases and 11,323 reported deaths, as of March 2016. Domestic transmission of the Guinea strain associated with the outbreak occurred mainly in six African countries, and international transmission was reported in four countries. Outbreak management was limited by the inability to rapidly diagnose infected cases. A further fifteen countries in Africa are predicted to be at risk of Ebolavirus outbreaks in the future as a consequence of climate change and urbanization...
April 23, 2018: Virology Journal
https://www.readbyqxmd.com/read/29601894/susceptibility-of-paramyxoviruses-and-filoviruses-to-inhibition-by-2-monofluoro-and-2-difluoro-4-azidocytidine-analogs
#4
Michael K Lo, Paul C Jordan, Sarah Stevens, Yuen Tam, Jerome Deval, Stuart T Nichol, Christina F Spiropoulou
Ebolaviruses, marburgviruses, and henipaviruses are zoonotic pathogens belonging to the Filoviridae and Paramyxoviridae families. They exemplify viruses that continue to spill over into the human population, causing outbreaks characterized by high mortality and significant clinical sequelae in survivors of infection. There are currently no approved small molecule therapeutics for use in humans against these viruses. In this study, we evaluated the antiviral activity of the nucleoside analog 4'-azidocytidine (4'N3 -C, R1479) and its 2'-monofluoro- and 2'-difluoro-modified analogs (2'F-4'N3 -C and 2'diF-4'N3 -C) against representative paramyxoviruses (Nipah virus, Hendra virus, measles virus, and human parainfluenza virus 3) and filoviruses (Ebola virus, Sudan virus, and Ravn virus)...
March 27, 2018: Antiviral Research
https://www.readbyqxmd.com/read/29597097/performance-evaluation-of-four-type-specific-commercial-assays-for-detection-of-herpes-simplex-virus-type-1-antibodies-in-a-middle-east-and-north-africa-population
#5
Rana S Aldisi, Malaz S Elsidiq, Soha R Dargham, Afifah S Sahara, Enas S Al-Absi, Mariam Y Nofal, Layla I Mohammed, Laith J Abu-Raddad, Gheyath K Nasrallah
BACKGROUND: The number of diagnostic assays for the detection of herpes simplex virus type 1 (HSV-1) antibodies has increased over the years. However, their performance characteristics could vary among global populations. OBJECTIVE: To investigate performance of two commercial ELISA kits, HerpeSelect® 1 ELISA and Euroimmun Anti-HSV-1 (gC1) ELISA (IgG); and two commercial immunoblot (IB)/Western blot (WB) assays, HerpeSelect® 1 and 2 Immunoblot IgG, and Euroimmun Anti-HSV-1/HSV-2 gG2 Euroline-WB (IgG/IgM); in detecting HSV-1 antibodies in a Middle East and North Africa (MENA) population...
March 22, 2018: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/29514907/distinct-immunogenicity-and-efficacy-of-poxvirus-based-vaccine-candidates-against-ebola-virus-expressing-gp-and-vp40-proteins
#6
Adrián Lázaro-Frías, Sergio Gómez-Medina, Lucas Sánchez-Sampedro, Karl Ljungberg, Mart Ustav, Peter Liljeström, César Muñoz-Fontela, Mariano Esteban, Juan García-Arriaza
Zaire and Sudan ebolavirus species cause a severe disease in humans and nonhuman primates (NHPs) characterized by a high mortality rate. There are no licensed therapies or vaccines against Ebola virus disease (EVD), and the recent 2013 to 2016 outbreak in West Africa highlighted the need for EVD-specific medical countermeasures. Here, we generated and characterized head-to-head the immunogenicity and efficacy of five vaccine candidates against Zaire ebolavirus (EBOV) and Sudan ebolavirus (SUDV) based on the highly attenuated poxvirus vector modified vaccinia virus Ankara (MVA) expressing either the virus glycoprotein (GP) or GP together with the virus protein 40 (VP40) forming virus-like particles (VLPs)...
June 1, 2018: Journal of Virology
https://www.readbyqxmd.com/read/29500195/design-and-evaluation-of-bi-and-trispecific-antibodies-targeting-multiple-filovirus-glycoproteins
#7
Elisabeth K Nyakatura, Samantha E Zak, Anna Z Wec, Daniel Hofmann, Sergey Shulenin, Russell R Bakken, M Javad Aman, Kartik Chandran, John M Dye, Jonathan R Lai
Filoviruses (family Filoviridae) include five ebolaviruses and Marburg virus. These pathogens cause a rapidly progressing and severe viral disease with high mortality rates (generally 30-90%). Outbreaks of filovirus disease are sporadic and, until recently, were limited to less than 500 cases. However, the 2013-2016 epidemic in western Africa, caused by Ebola virus (EBOV), illustrated the potential of filovirus outbreaks to escalate to a much larger scale (over 28,000 suspected cases). mAbs against the envelope glycoprotein represent a promising therapeutic platform for managing filovirus infections...
April 20, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29462200/a-prophylactic-multivalent-vaccine-against-different-filovirus-species-is-immunogenic-and-provides-protection-from-lethal-infections-with-ebolavirus-and-marburgvirus-species-in-non-human-primates
#8
Benoit Callendret, Jort Vellinga, Kerstin Wunderlich, Ariane Rodriguez, Robin Steigerwald, Ulrike Dirmeier, Cedric Cheminay, Ariane Volkmann, Trevor Brasel, Ricardo Carrion, Luis D Giavedoni, Jean L Patterson, Chad E Mire, Thomas W Geisbert, Jay W Hooper, Mo Weijtens, Jutta Hartkoorn-Pasma, Jerome Custers, Maria Grazia Pau, Hanneke Schuitemaker, Roland Zahn
The search for a universal filovirus vaccine that provides protection against multiple filovirus species has been prompted by sporadic but highly lethal outbreaks of Ebolavirus and Marburgvirus infections. A good prophylactic vaccine should be able to provide protection to all known filovirus species and as an upside potentially protect from newly emerging virus strains. We investigated the immunogenicity and protection elicited by multivalent vaccines expressing glycoproteins (GP) from Ebola virus (EBOV), Sudan virus (SUDV), Taï Forest virus (TAFV) and Marburg virus (MARV)...
2018: PloS One
https://www.readbyqxmd.com/read/29398634/existing-and-potential-infection-risk-zones-of-yellow-fever-worldwide-a-modelling-analysis
#9
Freya M Shearer, Joshua Longbottom, Annie J Browne, David M Pigott, Oliver J Brady, Moritz U G Kraemer, Fatima Marinho, Sergio Yactayo, Valdelaine E M de Araújo, Aglaêr A da Nóbrega, Nancy Fullman, Sarah E Ray, Jonathan F Mosser, Jeffrey D Stanaway, Stephen S Lim, Robert C Reiner, Catherine L Moyes, Simon I Hay, Nick Golding
BACKGROUND: Yellow fever cases are under-reported and the exact distribution of the disease is unknown. An effective vaccine is available but more information is needed about which populations within risk zones should be targeted to implement interventions. Substantial outbreaks of yellow fever in Angola, Democratic Republic of the Congo, and Brazil, coupled with the global expansion of the range of its main urban vector, Aedes aegypti, suggest that yellow fever has the propensity to spread further internationally...
March 2018: Lancet Global Health
https://www.readbyqxmd.com/read/29391128/rift-valley-fever-in-egypt-and-other-african-countries-historical-review-recent-outbreaks-and-possibility-of-disease-occurrence-in-egypt
#10
REVIEW
Mohamed A Kenawy, Yousrya M Abdel-Hamid, John C Beier
This article reviews and discusses the historical and recent status of Rift Valley Fever (RVF) in Egypt and the other African countries based on the available and scattered reports. The recent outbreaks in African countries were reviewed and mapped out. Four major epidemics have been recorded in Egypt (1977, 1978, 1993 and 2003). The outbreak resulted in unpredicted human disease with severe clinical manifestations and heavy mortality as well as many abortions and deaths in sheep, goats, cattle, water buffalo and camels...
May 2018: Acta Tropica
https://www.readbyqxmd.com/read/29357885/hepatitis-b-infection-and-preeclampsia-among-pregnant-sudanese-women
#11
Mohamed A Ahmed, Manal E Sharif, Duria A Rayis, Abubakr M Nasr, Ishag Adam
BACKGROUND: Previous published studies have reported conflicting results of association between hepatitis B virus (HBV) infection and preeclampsia. There was no published data on HBV and preeclampsia in Africa including Sudan. The aim of the present study was to investigate the association between HBsAg seropositivity and preeclampsia. METHODS: A case -controls study (200 women in each arm) was conducted at Saad Abualila Maternity Hospital, Khartoum, Sudan. The cases were women with preeclampsia and the controls were healthy pregnant women...
January 22, 2018: Virology Journal
https://www.readbyqxmd.com/read/29351273/understanding-the-legal-trade-of-cattle-and-camels-and-the-derived-risk-of-rift-valley-fever-introduction-into-and-transmission-within-egypt
#12
Sebastian Napp, Veronique Chevalier, Núria Busquets, Paolo Calistri, Jordi Casal, Mohamed Attia, Rehab Elbassal, Heba Hosni, Hatem Farrag, Noura Hassan, Rasha Tawfik, Sohair Abd Elkader, Shahin Bayomy
Rift Valley Fever (RVF) is a mosquito-borne zoonosis, which may cause significant losses for the livestock sector and have serious public health implications. Egypt has been repeatedly affected by RVF epidemics, mainly associated to the importation of animals from sub-Saharan countries, where the disease is endemic. The objective of our study was the improvement of the surveillance and control strategies implemented in Egypt. In order to do that, first we evaluated the legal trade of live animals into and within Egypt...
January 2018: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29303554/a-serological-point-of-care-test-for-the-detection-of-igg-antibodies-against-ebola-virus-in-human-survivors
#13
Polina Brangel, Ariel Sobarzo, Claudio Parolo, Benjamin S Miller, Philip D Howes, Sigal Gelkop, Julius J Lutwama, John M Dye, Rachel A McKendry, Leslie Lobel, Molly M Stevens
Ebola virus disease causes widespread and highly fatal epidemics in human populations. Today, there is still great need for point-of-care tests for diagnosis, patient management and surveillance, both during and post outbreaks. We present a point-of-care test comprising an immunochromatographic strip and a smartphone reader, which detects and semiquantifies Ebola-specific antibodies in human survivors. We developed a Sudan virus glycoprotein monoplex platform and validated it using sera from 90 human survivors and 31 local noninfected controls...
January 23, 2018: ACS Nano
https://www.readbyqxmd.com/read/29260678/serologic-evidence-of-fruit-bat-exposure-to-filoviruses-singapore-2011-2016
#14
Eric D Laing, Ian H Mendenhall, Martin Linster, Dolyce H W Low, Yihui Chen, Lianying Yan, Spencer L Sterling, Sophie Borthwick, Erica Sena Neves, Julia S L Lim, Maggie Skiles, Benjamin P Y-H Lee, Lin-Fa Wang, Christopher C Broder, Gavin J D Smith
To determine whether fruit bats in Singapore have been exposed to filoviruses, we screened 409 serum samples from bats of 3 species by using a multiplex assay that detects antibodies against filoviruses. Positive samples reacted with glycoproteins from Bundibugyo, Ebola, and Sudan viruses, indicating filovirus circulation among bats in Southeast Asia.
January 2018: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/29215269/lanthanum-based-metal-organic-frameworks-for-specific-detection-of-sudan-virus-rna-conservative-sequences-down-to-single-base-mismatch
#15
Shui-Ping Yang, Wei Zhao, Pei-Pei Hu, Ke-Yang Wu, Zhi-Hong Jiang, Li-Ping Bai, Min-Min Li, Jin-Xiang Chen
Reactions of La(NO3 )3 ·6H2 O with the polar, tritopic quaternized carboxylate ligands N-carboxymethyl-3,5-dicarboxylpyridinium bromide (H3 CmdcpBr) and N-(4-carboxybenzyl)-3,5-dicarboxylpyridinium bromide (H3 CbdcpBr) afford two water-stable metal-organic frameworks (MOFs) of {[La4 (Cmdcp)6 (H2 O)9 ]}n (1, 3D) and {[La2 (Cbdcp)3 (H2 O)10 ]}n (2, 2D). MOFs 1 and 2 absorb the carboxyfluorescein (FAM)-tagged probe DNA (P-DNA) and quench the fluorescence of FAM via a photoinduced electron transfer (PET) process...
December 18, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/29168447/a-brief-summary-of-the-epidemiology-and-genetic-relatedness-of-avian-influenza-h9n2-virus-in-birds-and-mammals-in-the-middle-east-and-north-africa
#16
REVIEW
A Nagy, T C Mettenleiter, E M Abdelwhab
H9N2 is the most widespread avian influenza virus subtype in poultry worldwide. It infects a broad spectrum of host species including birds and mammals. Infections in poultry and humans vary from silent to fatal. Importantly, all AIV, which are fatal in humans (e.g. H5N1, H7N9) acquired their 'internal' gene segments from H9N2 viruses. Although H9N2 is endemic in the Middle East (ME) and North Africa since the late 1990s, little is known about its epidemiology and genetics on a regional level. In this review, we summarised the epidemiological situation of H9N2 in poultry and mammals in Iran, Iraq, Kuwait, Qatar, United Arab Emirates, Oman, Bahrain, Yemen, Saudi Arabia, Jordan, Palestine, Israel, Syria, Lebanon, Turkey, Egypt, Sudan, Libya, Tunisia, Algeria and Morocco...
December 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/29142131/single-dose-trivalent-vesiculovax-vaccine-protects-macaques-from-lethal-ebolavirus-and-marburgvirus-challenge
#17
Demetrius Matassov, Chad E Mire, Theresa Latham, Joan B Geisbert, Rong Xu, Ayuko Ota-Setlik, Krystle N Agans, Dean J Kobs, Morgan Q S Wendling, Amanda Burnaugh, Thomas L Rudge, Carol L Sabourin, Michael A Egan, David K Clarke, Thomas W Geisbert, John H Eldridge
Previous studies demonstrated that a single intramuscular (IM) dose of an attenuated vesicular stomatitis virus vector (Vesiculovax™, rVSV-N4CT1) expressing the glycoprotein (GP) from the Mayinga strain of Zaire ebolavirus (EBOV) protected nonhuman primates (NHP) from lethal challenge with EBOV Kikwit and Makona strains. Here we studied the immunogenicity of an expanded range of attenuated rVSV vectors expressing filovirus GP in mice. Based on data from those studies an optimal attenuated tri-valent rVSV vector formulation was identified which included rVSV vectors expressing EBOV , Sudan ebolavirus (SUDV) or Angola strain of Marburg marburgvirus (MARV) GPs...
November 15, 2017: Journal of Virology
https://www.readbyqxmd.com/read/29104771/virus-vectored-ebola-vaccines
#18
I V Dolzhikova, E A Tokarskaya, A S Dzharullaeva, A I Tukhvatulin, D V Shcheblyakov, O L Voronina, S I Syromyatnikova, S V Borisevich, V B Pantyukhov, V F Babira, L V Kolobukhina, B S Naroditsky, D Y Logunov, A L Gintsburg
The Ebola virus disease (EVD) is one of the most dangerous infections affecting humans and animals. The first EVD outbreaks occurred in 1976 in Sudan and Zaire. Since then, more than 20 outbreaks have occurred; the largest of which (2014-2016) evolved into an epidemic in West Africa and claimed the lives of more than 11,000 people. Although vaccination is the most effective way to prevent epidemics, there was no licensed vaccine for EVD at the beginning of the latest outbreak. The development of the first vaccines for EVD started in 1980 and has come a long technological way, from inactivated to genetically engineered vaccines based on recombinant viral vectors...
July 2017: Acta Naturae
https://www.readbyqxmd.com/read/29031848/local-national-and-regional-viral-haemorrhagic-fever-pandemic-potential-in-africa-a-multistage-analysis
#19
David M Pigott, Aniruddha Deshpande, Ian Letourneau, Chloe Morozoff, Robert C Reiner, Moritz U G Kraemer, Shannon E Brent, Isaac I Bogoch, Kamran Khan, Molly H Biehl, Roy Burstein, Lucas Earl, Nancy Fullman, Jane P Messina, Adrian Q N Mylne, Catherine L Moyes, Freya M Shearer, Samir Bhatt, Oliver J Brady, Peter W Gething, Daniel J Weiss, Andrew J Tatem, Luke Caley, Tom De Groeve, Luca Vernaccini, Nick Golding, Peter Horby, Jens H Kuhn, Sandra J Laney, Edmond Ng, Peter Piot, Osman Sankoh, Christopher J L Murray, Simon I Hay
BACKGROUND: Predicting when and where pathogens will emerge is difficult, yet, as shown by the recent Ebola and Zika epidemics, effective and timely responses are key. It is therefore crucial to transition from reactive to proactive responses for these pathogens. To better identify priorities for outbreak mitigation and prevention, we developed a cohesive framework combining disparate methods and data sources, and assessed subnational pandemic potential for four viral haemorrhagic fevers in Africa, Crimean-Congo haemorrhagic fever, Ebola virus disease, Lassa fever, and Marburg virus disease...
December 16, 2017: Lancet
https://www.readbyqxmd.com/read/29021820/introduction-of-p16-ink4a-as-a-surrogate-biomarker-for-hpv-in-women-with-invasive-cervical-cancer-in-sudan
#20
Hina Sarwath, Devendra Bansal, Nazik Elmalaika Husain, Mahmoud Mohamed, Ali A Sultan, Shahinaz Bedri
BACKGROUND: Cervical cancer is the fourth most common cancer in women worldwide with highest incidence reported in Eastern Africa in 2012. The primary goal of this study was to study the expression of p16INK4a in squamous cell carcinoma (SCC) of the cervix by immunohistochemistry (IHC) and determine relation with clinico-pathological parameters. This study further explored the correlation of p16INK4a immunostaining with another proliferation marker, Ki-67 and to study if human papillomavirus (HPV) IHC can be used as a marker for detection of virus in high-grade dysplasia...
2017: Infectious Agents and Cancer
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